Pump



J, PEPPER June 4, 1929.

PUMP

Original; Filed April 25.

1921, s Sheets-Shet B. J. PEPPER PUMP Original Filed April 2:5. 192; :5Shets-Sheet 2 w. 5 W M. 1 I I i1 Id .6 I I I I ll m 0 w\\\\ 1 2 .6 J 0-6 y M 1 5 4.0 .l/ 1., 5 l I .6 6 6.. Q "@"khQhfi-h flflhu$h$h$fi m I m.6 4. 6

June 4, 1929. I B. J. PEPPER 1,716,147

' PUMP Original Filed A ril 23. 1921 s Sheets-Sheet 5 I Fi' lnpie n ionBy Alljyls Patented drained, 1923. V

UNIT D STATES PATENT OFFICE.

' BYRO J. PEPPER, on FORT AYNE, INnIANA,-AssI NoR TO s. F. BOWSER & com-PANY, me, or non/r W Y E, INDIANA, AJCORPORATION or INDIANA.

PUMP.

Original application filed April 23, 1921, Serial No. 463,848. Dividedand this application filed December 20, 1923. Serial No. 681,791. a

A further object is the provision of a pumping mechanism having apumping unit with a cylinder, plunger, plunger rod, and valves alldetachable as a unit without disturb ng the I rest of the mechanism.

A further object is the provision of a pumping mechanism in which thevalves are quickly and easily accessible for regrmding or re-; pairing.

- A further object is the provision of a pumpare mounted in an oilchamber so as to run in 1 oil.

A further object is the provision of a pump-- ing device adapted to pumpa plurality of separate fluids.

A further object is the provision of means for automatically stoppingthe device when a predetermined quantity of liquid is pumped.

A still further object is the provision of a pumping mechanism which isapplicable for a variety offorms of power driving mechanism.

. Other objects will appear hereinafter.

This application is a division of my copcnding application, Serial No.463,848, filed April 23, 1921, for an improvement in pumps and whichbecame Patent No. 1,559,365, gr'anted October 25,1925.

Embodiments of my present invention are illustrated in the accompanyingdrawings, forming a part of this specification, and in which- Fig. 1 isa central section of a pumping device embodying my invention;

Fig. 2 is an enlarged vertical section of a pressure regulating valve;

Fig. 3 is a View similar to Fig. 2 but showing the pressure regulating,valve adapted for stopping the pumping mechanism; and

Flg. 4 is a view similar to Fig. 1, except that the pumping mechanism isarranged to pump two separate liquids.

Referring more particularly to the accompanying drawings and as alsoclearly shown in my Patent No. 1,559,365, above identified,

I have indicated a base member 20, which in the present instance. is acasting, but may be formed in any desirable manner. Resting on the base20 is a housing 21, and this housing 1s also indicatedas being a castingin the present instance, but may be formed in any desirable manner ornumber of parts. The housing 21 1s 1ndicated as having cars 22 securedto base 20 by cap screws 23, or their equivalent.

I preferably provide the housing 20 with open ngs 24 on its lateralsides, and these openings 24 are closed by plates 25 secured by screws26, or their equivalent. By removing the plates 25 the pump cylindermechanism may be. accessible.

Across the upper portion of the housing 21 I provide a partition 27,which in the present instance is somewhat V-shaped in cross-sectlon, asclearly indicated in Fig. 1. The chamber 28 above partition 27 isa-receptacle for oil or other lubricant and alsois a chamber in whichthe cranks and connecting rods for operating the pumps are mounted. By

mounting the cranks, etc. in oil in this cham-' plates 30. These plates30 may be secured by screws 31, or in any other desirable manner.

Attached to the inner sides of plates 30 are bearings 32 in which acrank shaft 33 is journaled. I have indicated the bearing 32 as belngformed integral with the plates 30, but said bearings may be arranged inchamber 28 in any desirable manner.

and connected to each is a connecting rod 36 which is pivoted to asliding rod 37. Each of the rods 37 is mounted for sliding in a bearing38 adjacent crank shaft 33 and a stuffing box 39'at the partition 27.The lower ends of the rods 37 are attached tothe pump piston rods.

Attached to the top of base 20 in .any desirable manner, such as by capscrews 40 are housings 41 which enclose two chambers 42,

and 43. Chamber 42 as better illustrated in my above identified PatentNo. 1,559,365 is in communication with the upper end of the pumpingcylinder, and chamber 43 is in communication with the lower end of saidcylinder. The chamber 42 is divided from cham-- ber 43- byverticalpartitions 45. In each of chambers 42 and 43 is an intake valve46 and a discharge valve. The intake .valves 46 are in communicationwith an intake cham her 48 in base 20 and chamber 48 connects with asuction pipe 49, see Fig. 4, and the latter is connected ,to some sourceof liquid to be pumped, not shown.

Also, in base 20 is adischarge chamber 50 which communicates with theupper sidesof discharge valves and is also connected with adischarge'pipe into which the liquid is pumped. Mounted in the pumpingcylinder is a piston having a piston rod53 extending up through astu'fling box 54 and connected with rod by a pin 55. It will be notedthat when piston 52 is moved downwardly in the pumping cylinder theintake valve. 46 in chamber 42 will rise to permit a liquid to entersaid cylinder, and upon the upward movement of piston 52 said valve 46will be closed and the discharge valve in said chainber willb e raisedby the liquid and the latter pass out into discharge passage 50. Inthese same movements of the piston the downward stroke of thelatterforces liquid outof the lower end of pumping cylinder and throughthe discharge valve into discharge passage 50, and the upward stroke ofsaid piston will draw liquid from chamber 48 through valve 46' inchamber 43 to the'lower end of the cylinder. Thus, the piston draws inliquid at one side thereof and discharges liquid at the other sidethereof at each stroke. The valve 46 and the discharge valve aresubstantially alike and mounted in similar manners as will more fullyappear from my abovenoted patent. The housing 41 is provided withthreaded openings for said valves and in each opening is a cap 56 whichhas a guide 011 1ts lower side. In the guide ls a stem on one of saidvalves 46 or the dlscharge 1. Fitted in the base 20- is a housing 61'which has a guide 62 therein. {In the guide I 62 is the stem 63 of valve'60 arranged. so that the latter mayslide vertically to con-.

trol the opening between chambers 48 and 50.

Above guide 62 in housing 61' is an enlarge. ment 64 which slides easilyin the bore of housing 61, and pressing on the'upper side of enlargement64 is a compressing spring 65 which normally holds valve 60 closed. .An-

adjustable member 66 is threadediin the housin 61 for varying thetension of spring 65. When it is desired to provide a pump which willpump a liquid, delivering it at a desired pressure, a relief valve, suchas that just descr bed, and as indicated in Fig. 2, may

.be arranged to operate valve 60.

When it 'is desired .to have the 'pump stopped when a pressure exceedinga prede-- termined pressure is obtained in chamber 50, a controlmechanism, such as indicated in Fig. 1, is arranged tocontrol the valve60.

' In this arrangement the enlar ement 6.4 has a rod 67 extending upthrough the top of housing 61 through a stuffing box 68and provided withan-adjustablenut or bumper. 69 at itsv top. The nut 69engagesan' arm 7 0on a stirrup 71 which is pivoted on a shaft-72. The shaft 72 .isjournaled in a suitable-part. of

housing 21 and-has .fixed" thereon a cam. 73.},

The cam operates against a roller 74 pivoted as at 75 011 a'horizontally sliding rod 76. The rod 76 carriesa belt shifter 77 adaptedto shiftthe belt back andforth between pulleys 34 an'd35. A spring 7 8tends to normally hold the belt shifterin a position to hold the beltonfloosepulley 35. On the shaft 72 is fixed a lever 79 so that when itis desired to'throw Y the pump into operation, the operator manuallymoves lever 7 9 from its position indicated in dotted lines in Fig. 1 toits position indicated in'full lines in Fig. 4. This moves cam againstroller 74 and the latter moves rod 7 6 against the influence of spring78 and carries. the; belt shifter 77 along to shift the belt from loosepulley 35 to tight pulley 34, thus placingthe pump in operativecondition; When a pressure exceeding a predetermined pressure isobtaind-in chambr'50, such pressure raises valve 60 against theinfluence of spring 65 and swings the stirrup 71 on shaft 72, and thisswinging of the stirrup moves cam 7 3 upwardly a suflicient distance todislodge roller 74 from a depression 80 in said cam 73. As soon as theroller 74 moves out of depression 80 spring 78 moves rod 7 6 carryingthe belt shifter over to shift the belt back to the loose pulley 35thereby stopping the pump.

I have provided a means whereby the pump will, when it has pumped apredetermined quantity, be shut off automatically. To this end a pin isprovided in a disc 82 on a screw 83. Secured to the back of disc 82 is aratchet wheel and the ratchet wheel is'operated by two pawls which arepivoted to a plate and the latter pivoted about the screw 83. The lever88 is pivoted and operated by a link 90. Said link 90 has an elongatedslot 91 therein engaging pin onpump piston rod 53. The arrangement issuch that when the pin 55 moves upwardly it engages the top of slot 91moving lever 88 a short distance, and upon the downward movement of pin55 the latter engages the bottom of slot 91 moving the lever 88 andconsequently the plate in the forward direction.

On a suitable part of plate 25 or other portion of the casing I providemarkings 96 indicating g the pumping mechanism. A portion of the housingor plate 25 has a circular opening 97 through which a pointer 98extends. The pointer 98 is secured by the screw 83 and a screw 99 on theface of'disc 82. A slot may be provided in the pointer 98 engaging screw99 so that the relation between pointer 98 and disc 82 may be variedslightly when so desired. With this arrangement when it is desired topump a predetermined quantity of liquid, we will say five gallons forinstance,-

the operator moves the pointer 98 so that it points to the notation of 5of graduations 96. Then upon throwing the pump into operation by movinglever 79 the pump will operate until the piston rod 53 causes the disc82 to be moved until pointer 98 reaches the notation 50, which is alsothe zero or setting point. When the pointer has reached thisposition','pin 81 will engage a projection 101 on stirrup 71 therebylifting cam 7 3 high enough to disengage roller 74 from the depressionin said cam, at which time the spring 7 8 will move the belt shifterover so as to move the belt from pulley 34 to pulley 35 thereby stoppingthe device. It will therefore be seen that the pump may be stopped byhand by the operator manually moving lever 7 9 into a position indicatedin Fig. 1. The pump may be stopped by the discharge line being closedwhich will increase the pressure in passage 50 and thereby cause valve(30 to trip cam 73 to stop the device. The device may also be stoppedwhen a predetermined quantity of fluid has been pumpedby the pin 81being forced against the inclined surface 101 of stirrup 71 which raisescam 73 thereby permitting spring 7 8 to move the belt shifter.

In Fig. 4 I have indicated the pumping allons or other units pumped by,

' driven by a separate set of pulleys 34 and 35.

Each .of the pulleys may have its set of beltshifting mechanism, such asalready de scribed, so that one pump may be stopped independently of theother in any of the ways already mentioned. In such an arrangement theautomatic stopping device on the lefta:

hand side of Fig. 4 will be changed only suflllcient to adapt it for theleft-hand side instead of the mechanism already described for theright-hand side.

In Figures 1 and 4 I have represented the casing of the machine ofsubstantially the same form and it is an advantageous feature to arrangethe casing so that a customer may select any form of driving means hedesires. In this connection it will benoted that the end plates 30 arethe only parts necessary to vary for the different forms of drivingmeans.

Also, the same casing will enclose-the double pump mechanism shown inFig.4, as well as the single form shown in Fig. 1. The only changenecessary is the mounting for the crankshaft and the arrangement of thechambers 48 and 50 in the base. Of course where belt-shifting stoppingmechanism is used then two sets of these would be needed in thedischarge valves at the highest points or in the top walls of thechambers 42 and 43 so that there is no chance for air or gases pocketingin the pump element.

The quantity notations 96 which cooperate with the pointer'98 are shownin the drawings as indicating 50 gallons, but it will be understood thatby varying the size of the cylinders or the driving connection anydesired number of gallons may be indicated.

To set the device for pumping a desired quantity the pointer 98 is movedmanually clock wise until it points to the required number and at whichtime pin 81 will engage inclined surface on the stirrup 71 to stop thedriving mechanism as above referred to. i

I claim 1. A pump comprising a base. having intake and dischargepassages therein; a by pass valve in said base connecting said intakenected with saidintake and dischargev passages; and means associatedwith said valve for normally maintaining the latter closed,

- movement; a belt shifter on said rod; a spring said means beingadapted to yield upon pres sure in said discharge passage'exeeeding apredetermined pressure. U f

' 2. A pump comprising a base having intake and discharge passagestherein; a pump ing unit attached to said base and havingconnnunicationwith sa-id intake and discharge passages; a valve in saidbase connecting said intake and discharge. passages; and a springtending to hold said valve closed. i v 3. A pump comprising a pumpingunit having intake and discharge'passages associated therewith; a pumpioperating means connected with said pumping'unit; a valve connectingsaid intake and discharge passages; means having a predetermined forcefor maintaining said valve closed and adapt ed to yield upon thepressure. in said discharge passage exceeding a predetermined pressuretoopen said valve; and a connection between said valve and said pumpoperating means for rendering the latter inoperative. 4. A pumpcomprising a casing; a pump operating shaft mounted in theeasing; a pumpunit in the casing connected with said shaft and having intake anddischarge passages associated therewith; tight and loose pulleys on saidshaft; a belt shifter mounted in said casing; a spring tending to movethe belt shifter toward the loose pulley; a catch adapted for engagementwith said belt-shifter; and a valve in said discharge passage connectedwith said catch.

V 5. A pump comprising a pumping unit.

having'intake and discharge passages associated therewith; a valveconnecting said intake and discharge passages; a. spring tending to holdsaid'valve closed; a crank shaft operatively connected with saidpumpingunit; crankshaft operating means connected with said crank shaft;and means-connected with said valve for rendering-the crank shaftoperatingmeans inoperative. I

6. A pump comprising a pumping unit having intake and discharge passagesassociated therewith; a crank shaftconnected with said )um DlII unit' avalve connectin said intake and discharge passages; a spring normallyholding sald valve closed, tight and loose pulleys on said crank shaft;a belt shifter as- I 'sociated with said pulleys; a spring'tending tomove said belt shifter toward said loose pulley; a catch on said beltshifter; and a member attached to said valve and engaging said, catchadapted to hold the belt shifter adjacent said tight pulley.

7. A pump comprising a pumping unit having a discharge passageassociated therewith; a valve in said dlscharge passage; a

shaft "connected A with said pumping unit; tight and loose pulleys onsaid shaft; ajrod having its axis. substantially parallel withsaid-shaft and mounted for longitudinal on said rod ;'a ca1n having adepression there in engaging said roller; pump operable means fordisconnecting said roller from said depression; and a spring associatedwith said rod for moving the belt shifter in one direction.

9. Control mechanism for a pump comprising a pump shaft; heltpul'leys onsaid shaft;

a rod slidab'ly mounted; abelt shifter on said rod; a roller on saidrod; a spring associated with said rod andtend ing to move the latter inone direction; a cam having a depression therein adapted to engage saidroller and hold said rod against the influence of said spring; and meansadapted to move said cam to disengage said depression from saidrolle'rwand permit the spring to move said rod.

10. Control mechanism fora pump comprising a belt shifting rod; a springassociated with said rod for movingthe latter in'one direction; meansfor holding the rod against the influence of said spring; and means forrendering the means holding the rod against the influence of the springinto inoperative condition. v

A pump comprising a pumping unit hav ng a reclprocatory member therein;a power shaft operatively connected with the pumping unit; a beltshifter associated with said power shaft; a spring adapted to move thebelt shifter in one direction; a catch for holding the belt shifteragainst the influence of said spring; a trip for engaging said catchfrom said belt shifter; and means operable by thepump for operating saidtrip.

12. A pump comprising a pumping unit having a discharge passageassociated therewith a drive shaft connected with said pumpcatory memberof saidpumping unit adapted to engage said stirrup and move the cam outofoperative engagement with said belt shifter name to this specificationon this 12th day of December A. D. 1923.

BYRON J. PEPPER] In testimony uvhe'reof I have signed my 10

